116 Mr. G. Hodge on the British Pycnogonoidea. 
Pallene pygmea (Hodge). Pl. XIII. figs. 16 & 17. 
Thorax robust. Legs long and slender, constricted at the joints, 
last joint falciform, with a strong toothed shoulder at the 
base ; two strong spines on the sixth jomt. Rostrum short, 
stout. Footjaws closely approximated. Oculiferous tubercle 
moderately long. Abdomen stout. 
This species was taken by Mr. Spence Bate in the neighbour- 
hood of Plymouth, so far back as 1853, and by him noticed in 
a paper of that year, read before the British Association at Hull. 
It was, however, neither named nor described, his remarks bear- 
ing upon the larval stages of these animals. I have also taken 
a single specimen upon the Durham coast. Length +4; of an 
inch. 
The three species new to Britain all belong to the genus 
Nymphon. They were described by Kroyer in Gaimard’s Scan- 
dinavian ‘ Voyage.” One species (Nymphon Strémii) has been 
taken in Shetland by the Rev. A. M. Norman; the other two 
(Nymphon miztum and N. longitarse) have been taken by myself 
on the Durham coast. 
The following list contains all the species at present recorded 
as inhabiting the British seas :— 
Nymphon, Fabricius. Achelia, Hodge. 
gracile, Leach. echinata, Hodge. 
grossipes, Fabricius. hispida, Hodge. 
femoratum, Leach. levis, Hodge. 
pictum, Pallene, Johnston. 
giganteum, Johnston. brevirostris, Johnston. 
longitarse, Kroyer. circularis, Goodsir. 
— mixtum, Kroyer. pygmea, Hodge. 
Stromii, Kroyer. Phoxichilidium, M.-Edwards. 
— hirtum, Fabricius. coccineum, Johnston. 
brevitarse, Kroyer. globosum, Goodsir. 
Johnstoni, Goodsir. olivaceum, Gosse. 
—— spinosum, Goodsir. petiolatum, Kroyer (Pallene 
pellucidum, Goodsir. attenuata, Hodge). 
simile, Goodsir. virescens, Hodge. 
— minutum, Goodsir. Pasithoé, Goodsir. 
—— brevirostre, Hodge. vesiculosa, Goodsir. 
Ammothoa, Dana. Phoxichilus, Latreille. 
brevipes, Hodge. spinosus, Montagu. 
longipes, Hodge. Pycnogonum, Fabricius. 
httorale, Strom. 
There can be little doubt that a careful examination of the 
species found on various parts of our coast would add many new 
forms to this list, especially amongst the smaller species. 
Whilst most departments of marine zoology have made rapid 
strides within the last few years, our knowledge of the Pyenogons 
has scarcely advanced. No doubt this is owing, in a great mea- 
